Agree with you, shirk does take a person out of Islam and the person who does shirk becomes a mushrik. But we need to be very careful on labelling people with shirk accusations. Because what if that person is not committing shirk and we are falsely accusing them of shirk. Then this is a grave sin we are committing and its the way of the khawarij. We cannot claim to oppose khawarijs with our tongues but in action we follow them and their theology.
Sometimes Muslim commit Haram acts such as prostration to graves and Shaykhs but this is in no way classified as shirk. It is only shirk when the Sujood of ibada is done. The only issue is many jahil people do jahaliya acts and the Muslims of Indian subcontinent are blamed for it and are accused of being people of shirk and then the extreme people do suicide attack on our army and population. I blame the people who promote this type of thinking
If people are going to graves and doing wrong acts then we need to be role model and visit graves more as Islam allows visiting graves and we should show people how it's done. We shouldn't throw a grenade. Keep in mind the people who throw a grenade are only following those people who are giving shirk fatwas. This problem is not just in Pakistan. Suicide attacks happen on graves in Egypt Somalia Pakistan Afghanistan Iraq Libya Yemen Mali Algeria. This all started from a certain beloved Arab nation.
